title: Polycyclic aromatic hydrocarbons study in atmospheric fine and coarse particles using diagnostic ratios and receptor model in urban/industrial region.
abstract: Atmospheric fine and coarse particles were collected in Teflon filters in three cities of the region of the Lower Sinos River Basin of Rio Grande do Sul in the year 2010. The filters were Soxhlet extracted, and 14 priority PAHs were analyzed using a gas chromatograph coupled to a mass spectrometer (GC/MS). The principal emission sources of these compounds were assessed by using diagnostic ratios and receptor model: positive matrix factorization (PMF 3.0) of the US Environmental Protection Agency. The results of PAHs concentration for the studied year showed significant levels of high molecular weight (HMW) PAH, Ind, and BghiP, in PM2.5 in the winter season, showing the influence of mobile sources. The application of receptor model PMF 3.0 revealed that the main sources of PAHs were vehicle fleet (both diesel and gasoline), followed by coal combustion, wood combustion, and resuspension of dust. The results of the receptor modeling are in agreement with the data obtained by the ratio diagnostic.
authors.affiliation: Research Department, Fundação Estadual de Proteção Ambiental Henrique Luis Roessler, Rua Carlos Chagas 55/802, 90030-020, Porto Alegre, Rio Grande do Sul, Brazil, gerpro.pesquisa@fepam.rs.gov.br.
authors.forename: Elba Calesso
authors.initials: EC
authors.lastname: Teixeira
authors.forename: Camila Dalla Porta
authors.initials: CD
authors.lastname: Mattiuzi
authors.forename: Dayana Milena
authors.initials: DM
authors.lastname: Agudelo-Castañeda
authors.forename: Karine de Oliveira
authors.initials: Kde O
authors.lastname: Garcia
authors.forename: Flavio
authors.initials: F
authors.lastname: Wiegand
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000706:statistics & numerical data*; D001272:Atmosphere / Q000737:chemistry*; D002947:Cities / Q000706:statistics & numerical data; D004784:Environmental Monitoring / Q000379:methods*; D007221:Industry / Q000706:statistics & numerical data; D008956:Models, Chemical; D052638:Particulate Matter / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D052638:Particulate Matter; D011084:Polycyclic Aromatic Hydrocarbons